baber/WOPTO huggingface dataset:
Patent GB-390138-A (GB)
Title: Improvements in or relating to contact plugs
Filed: 1931-06-25
Abstract: 390,138. Plug couplings. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, 13D, Emmasingel, Eindhoven, Holland. June 25, 1931, No. 18400. Convention date, June 27, 1930. Void [Published under Sect. 91 of the Acts]. [Class 38 (i).] Strain-taking devices for flexible leads.-The body of the plug member is divided longitudinally, one half 1A, Fig. 1, carrying a movable arm 2 having a recess 11 that receives the flexible leads and presses them against corrugations 21, Fig. 2, on the other half 1B of the body, when the two halves are drawn together by a screw passing through a hole 14 and engaging a nut 10 on the arm 2. The arm is secured by a stud 12 thereon loosely fitting a hole in the base, and flanges 7, 8 that guide the arm. The contact pin 17 has a squared end to which is screwed a resilient strip 18, Fig. 5, bent so that its end 18B wedges in a recess 20 in the part 1B, and its other end 18A fits beneath a lug 3 in the part 1A.
Patent GB-250442-A (GB)
Title: Improvements in electrically-operated surgical or dental instruments
IPC: A61B5/053
Filed: 1925-07-20
Abstract: 250,442. Cameron, W. J. July 20, 1925. Electric and magnetic appliances.- A device for testing the sensitiveness and vitality of teeth or the like, bv the intermittent passage of an electric current, comprises a holder 10 of hard rubber, bakelite, &c. in which is mounted an induction coil comprising a core 25 adjustable by means of a slide 21 and surrounded by primary and secondary windings 17, 19, and a switch arm 28 which is moved by means of a finger-piece 33 over contacts 27 so as successively to make and break the circuit. The primary winding is connected at one end bv a wire 16 to a plug 14 for attaching to the mains, and at the other end to the switch 27, 28. The terminals of the secondary winding lead to a socket 41 and plunger contact 43, which make contact with the conductors 49, 50 passing through a glass tube 48 adjustably attached at 47, the projecting ends 49<a>, 50<a> of these conductors being brought into contact with the tooth &c. under test. Specification 235,712 is referred to.
Patent GB-1484418-A (GB)
Title: Method of measuring the pitch of twisted thread
IPC: G01B11/14
Filed: 1975-05-02
Abstract: 1484418 Measuring thread pitch photoelectrically ERWIN SICK GmbH OPTIK ELEKTRONIK 2 May 1975 [6 May 1974]  18462/75 Heading G1A [Also in Division G2] To measure the pitch of a twisted thread 11, Fig. 1, it is illuminated with mono-chromatic light from a source 14 and the resulting diffraction pattern is cast on a screen 12. The pattern can be analyzed photo-electrically or by eye, the screen being provided with a scale in the latter case. The source may be a laser with beam expanding optics. The pitch h is given by h = #A/L, where # is the source wavelength, A is the thread to screen separation and L is the separation of adjacent maxima in the pattern.
Patent GB-403449-A (GB)
Title: Tractors and like vehicles
IPC: B62D49/00
Filed: 1932-06-30
Abstract: 403,449. Tractor or like vehicle driving-gear. HAMILL, W. W., Beechcroft, Four Oaks Road, Four Oaks, Warwickshire, SCOTT, R. E., Wolmer View, Whitehill, Borden, Hampshire, and KITCHENHAM, S., 17, Michelham Gardens, Strawberry Hill, Middlesex. June 30, 1932, No. 18476. [Class 79 (ii).] Comprises a rear axle reduction gear and casing, a change-speed gear and casing adjacent the rear axle, and a plurality of power takeoff points located at the rear of the tractor and adapted to drive external machines. In the construction shown a power take-off shaft 3 is driven from one of the shafts 18 of the changespeed gear and drives a continuation shaft 8 through a clutch 5, and a belt pulley 9 through bevel gear 11, 12 and a clutch 16. A third power take-off shaft 20 may be driven from the shaft 3 through a chain 22 and a clutch 23. The shaft 20 is preferably below the shaft 3 and the shaft and chain 22 are enclosed in a casing 1, the chain being adapted to raise and distribute oil so as to lubricate the various parts.
Patent GB-598657-A (GB)
Title: Improvements in photographic colour development and colour forming developers
IPC: G03C7/333
Filed: 1944-09-28
Abstract: a  - (2 - sec. - Amyl - 5 - carboxybenzeneazo) - 2 - furoylacetonitrile is prepared by coupling diazotized 3-amino-4-sec.-amylbenzoic acid with 2-furoylacetonitrile. Monoazo dyes are obtained similarly by coupling diazotized aniline with benzoylacetonitrile, malodinitrile, ethyl cyanacetate, ethyl benzoylacetate, benzoylacetone, dibenzoylmethane, ethyl ethoxalylacetate, p-nitrophenylacetonitrile, ethoxalylacetone, and 1 : 4-diphenyl-1 : 3 : 4-triketobutane; diazotized 2 : 4-dinitraniline with benzoylacetanilide; diazotized 2-aminobenzthiazole with b -naphthoylacetone; diazotized 2-aminoquinoline with benzoylacetanilide; diazotized 1-phenyl-2 : 3-dimethyl-4-amino-5-pyrazolone with b -naphthoylacetonitrile; diazotized p-aminoanisole with 2-cyanacetyl-5-[N-phenyl : N-(g -phenyl-n-propyl)-sulphamyl]-coumarone; diazotized b -naphthylamine with 41 - [N - sec. - amyl - N - (411 - sec. - amylphenyl) sulphamyl]-acetanilide; and diazotized 2-sec.-amyl-5-carboxyaniline with 2-cyanacetylcoumarone.
Patent GB-905428-A (GB)
Title: Intense energetic gas discharge
IPC: H05H1/16
Filed: 1959-06-01
Abstract: 905,428. Discharge apparatus. UNITED STATES ATOMIC ENERGY COMMISSION. June 1, 1959 [July 15, 1958], No. 18550/59. Class 39 (1). An electric arc discharge device has feed gas supplied to the cathode, a magnetic field parallel to the common axis of anode and cathode or, in the case when both electrodes are curved, following the curved electrode axes, and cooling means for both anode and cathode. In one form, Fig. 1, a cup-shaped tungsten anode 2 and tungsten cathode 3 are associated with floating shields 5, 6, 10 and with floating baffles 18, 19. Carbon anodes are disadvantageous. The gas is preferably deuterium or tritium but may be air, hydrogen, argon, nitrogen or helium. A suitable operating pressure is 3 X 10<SP>-5</SP> mm. Hg or lower. 33 are water cooling tubes for both anode and cathode. An RF voltage source 31 is used for starting, a hollow arc being initiated between the tips of the electrodes 34-35 and then the gas feed is reduced so that the arc moves into the interior of both anode and cathode. Complete space charge neutralization occurs within the hollow cathode but not in the main arc volume. Electrons are emitted radially from within the cathode. The gas is completely ionized within the cathode. In modifications, the anode may be solid and may rotate. The arc may be enlarged at its central part, the theory being given. In another embodiment, Fig. 3 (not shown) there are two tungsten cathodes with a central cylindrical anode. Floating cathode. shields and electron reflectors are disposed adjacent each cathode. A floating plate may be substituted for one cathode of Fig. 3 (not shown). In another embodiment, Fig. 4 (not shown) the cathode is a cylinder bent arcuately and the anode an incomplete toroid having a number of magnet coils wrapped around it. The embodiments of Figs. 3 and 4 (not shown) may be used as sources of energetic ions and electrons and for the dissociation of molecular ions. The arc discharges are not hollow in these embodiments. A portion of the discharge away from the electrodes can be " pinched off " by magnetic coils to make it more intense so as to ignite a thermonuclear plasma. Specifications 853,916 and 858,734 are referred to.
Patent GB-1036915-A (GB)
Title: Improvements in or relating to shear plate assemblies for dryshaving apparatus
IPC: B26B19/04
Filed: 1963-05-10
Abstract: 1,036,915. Dry shavers. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. May 10, 1963 [May 14, 1962], No. 18603/63. Heading B4B. A shear plate assembly for a dry shaver having a shaving head comprising at least one reciprocatory cutting member which can be depressed against spring action and has a curved cutting face, and a shear plate which is fixed in relation to the cutting member and consists of a thin, flexible, perforated plate which curves around the cutting face of the cutting member is characterized in that the shear plate is hingedly connected to a rigid frame which is provided with means for detachably securing it to the shaver housing and supports the shear plate in the shape of an arch. The shaving head shown comprises two movable cutting members 36, 36a spring-urged into contact with two shear plates 2, 2a provided with hinge pins 5, 5a and 6 which are supported in the outer and centre limbs of a frame 1 having projecting therefrom lugs 17 formed with projections 18, each adapted to snap behind the transverse part 24 of the portion 23 of a wire spring 19, clamped between the shaver housing and a plate 20 secured thereto, so as to clamp the frame 1 on the upper edges of the plates 20. The outer limbs of the frame 1 are formed with reinforcing flanges 7, 7a, 8 and 8a and the pin 6 is detachably secured to the centre limb of the frame by means of a spring clip 12. The free ends of the limbs 31 of the springs 19 are held in bent-over lugs 34 projecting from the ends of the plates 20. The casing of the shaving head is formed with depressions engageable over projections 33 of the limbs 31. The springs 19 are released from the lugs 17 to allow removal of the shear plate assembly, by means of two push-buttons 26 which each co-operate with one of the limbs 25 of the portion 23 of the spring.
Patent GB-138556-A (GB)
Title: Improvements in valves and valve gear for rock drills and like percussive tools
IPC: E21B1/30
Filed: 1919-07-28
Abstract: 138,556. Rayner, G. H. T., and Rayner, P. July 28, 1919. Fluid-actuated gears.-The valve is provided with an enlarged central head a, which controls the admission and upon which the fluid-pressure acts to lock the valve, and with ends b, b<1> which control the exhaust through annular ports g<2>, h<2>. The ends of the valve chambers communicate with the cylinder by ports g, g<1>, h, h'. When the piston during its motion to the left uncovers the port g, fluid-pressure acts upon the head b, and this together with the compression in the right-hand end of the cylinder acting on the annular collar a throws the valve. In a modification, the shape of the valve is modified and additional ports provided, to provide a supplementary exhaust from each end of the cylinder.
Patent GB-843613-A (GB)
Title: Improvements in or relating to sintered heating resistors
IPC: H01B1/00
Filed: 1957-06-14
Abstract: A heating resistor comprises a main part consisting of a sintered molybdenum silicon compound containing 34-35% by weight of silicon and a second part consisting of a metallic substance resistant to oxidation between 300 DEG  and 700 DEG C.  The first part is used at above 1600 DEG C. and the second part, which may be a sintered molybdenum-silicon compound containing 36-37% of silicon, is subjected to an operating temperature of 300 DEG -700 DEG C.  The resistor is made by pressing a molybdenum-silicon powder containing 37% of silicon to a desired shape and sintering it at 1700 DEG C., the silicon content being reduced to 34.5% by an atmosphere of hydrogen.  The silicon compound in the second part is then increased to 36-37% impregnating it with molten silicon or by diffusing solid silicon or silicon vapour into it.  Any excess silicon evaporates as silicon monoxide during sintering, which is conducted in an atmosphere of a rare gas, e.g. argon containing 0.1% oxygen.  An oxide capable of being reduced by molybdenum silicide, e.g. chrome oxide (Cr2O3), tin oxide or silicon oxide (S1O2), may be added before sintering, and the oxide is reduced to a metal during sintering with evolution of silicon monoxide.ALSO:A heating resistor comprises a main part consisting of a sintered molybdenum silicon compound containing 34-35% by weight of silicon and a second part consisting of a metallic substance resistant to oxidation between 300 DEG  and 700 DEG C.  The first part is used at above 1600 DEG C and the second part, which may be a sintered molybdenum-silicon compound containing 36-37% of silicon, is subjected to an operating temperature of 300 DEG -700 DEG C.  The resistor is made by pressing a molybdenum-silicon powder containing 37% of silicon to a desired shape and sintering it at 1700 DEG C, the silicon content being reduced to 34,5% by an atmosphere of hydrogen. The silicon compound in the second part is then increased to 36-37% by impregnating it with molten silicon or by diffusing solid silicon or silicon vapour into it.  Any excess silicon evaporates as silicon monoxide during sintering, which is conducted in an atmosphere of a rare gas, e.g. argon containing 0,1% oxygen.  An oxide capable of being reduced by molybdenum silicide, e.g. chrome oxide (Cr2O3), tin oxide or silicon oxide (SiO2), may be added before sintering, and the oxide is reduced to a metal during sintering with evolution of silicon monoxide vapour.
Patent GB-236062-A (GB)
Title: Improvements in and relating to locking and interlocking devices for railway carriage doors and the like
IPC: B61D19/02
Filed: 1924-08-09
Abstract: 236,062. Baker, W. S. Graff-. Aug. 9, 1924. Pneumatically-operated fastenings. - Sliding doors of railway carriages &c. are locked against opening beyond a slight distance and have signalling means to indicate when the locking is effected and the. door shut. Fig. 1 shows a door 2 in the shut position, having a looking arm 1 pivoted to swing under spring pressure into the path of the door, and a signalling arm 5 on an axis 6 parallel to the axis of the arm 1 and contacting a bevel at the back of the door 2 in the shut position. The arm 1 is moved out of the path of the door by a pneumatic piston 16 acting on an arm 18 positively connected with the arm 1, and this also moves the signalling arm by means of arms 7, 8 and a one-way connecting-rod 9. When the arm 5 reaches the position shown, an electric contact 15 is made by an arm 12 moving with the arm 5 so that a signal is transmitted.
Patent GB-730138-A (GB)
Title: Improvements in means for mounting glass and other panels
Inventor: PERCIVAL JAMES
IPC: B60J10/00
Filed: 1953-07-09
Abstract: 730,138. Mounting vehicle windows; mouldings. HALLAM, SLEIGH & CHESTON, Ltd. April 28, 1954 [July 9, 1953], No. 19007/53. Classes 20 (3) and 20 (4). A one-piece rubber glazing strip particularly for mounting a window, or windscreen, panel 1 of a vehicle upon an upstanding flange 7 of a window surround 2, has a flat, or concave, base 4 adapted to seat upon a part 5 of the frame 2 and a channel 9 in its upper part to receive the panel 1, the inner side wall 10 of the channel being provided with an integral depending flange 11 to form a downwardly open groove 12 to receive the flange 7, the other side wall 13 being formed with an integral buttress flap 14 which extends from the top edge of the wall 13 and has its free edge stepped at 15 to interlockingly engage a longitudinal groove 16 formed in the lower portion of the strip. To fit the panel 1, the wall 13 of the strip, with the flap 14 disengaged from the groove 16, is flexed outwardly to permit the introduction of the panel 1, whereupon the wall 13 is allowed to spring back against the panel and the flap 14 is sprung into engagement with the groove 16, the flap 14 being put in compression in the direction of its length so that the wall 13 is pressed firmly against the face of the panel. The panel 1, when thus fitted into the strip, can be inserted into the frame 2 by springing the flange 11 over the upstanding flange 7. Alternatively, the strip may, in the first instance, be fitted to the flange 7.
Patent GB-502015-A (GB)
Title: An improved process for sealing off permeable or porous walls of hollow spaces
IPC: C04B24/38
Filed: 1937-07-08
Abstract: 502,015. Cements; concretes. STANDARD OIL DEVELOPMENT CO. July 8, 1937, No. 19026. Convention date, July 25, 1936. Drawings to Specification. [Class 22] To cement slurry is added a mixture of an aqueous solution of an alkali metal hydroxide and tannin or a tannin derivative, in sufficient quantity to retard the initial set and reduce the viscosity of the slurry. The slurry is used to seal off walls of hollow spaces such as bore holes and pit shafts. To a cement slurry containing 35 cc. of water per 100 gr. of cement is added a solution containing (by weight) 5 per cent of caustic soda and 5 per cent of quebracho, in the proportion 1 cc. solution to 100 gr. cement. The tannin &c. may be used in the form of extracts, solutions and distillates of tannins or tannates, including extracts of wood such as sumac or chestnut extracts, or as divi divi, gambier or spruce extracts, or as tannic acid or quercitannic acid, or as alkali salts of tannins. The Specification as open to inspection under Sect. 91 comprises also adding to the cement slurry any organic material of feebly acidic properties, with or .without alkaline hydroxide, including calcium hydroxide, e.g. humic acid, lignic acid, gallic acid, phenol compounds such as pyrogallol, extracts, solutions and distillates of lignins or of humins, alkali salts of the above substances, the lignins from the alkaline extraction of rice hulls, extracts of peat, straw and cereals, or carbocyclic sulphonic acids such as those obtained by the fuming acid treatment of petroleum oils as described in U.S.A. Specification 1,474,933 or those prepared from the Edeleanu extract obtained in the sulphur dioxide treatment of kerosene or other petroleum oil, or the alkali salts'of these sulphonic acids. This subjectmatter does not appear in the Specification as accepted.
Patent GB-1279076-A (GB)
Title: Apparatus for the storage of radioactive objects
Inventor: SURKES MENACHEM
IPC: G21F5/015
Filed: 1971-06-04
Abstract: 1279076 Handling radioactive material ISRAEL ATOMIC ENERGY COMMISSION STATE OF 4 June 1971 [18 Aug 1970] 19059/71 Heading B4Q Apparatus for the storage of radioactive objects comprises a cylindrical drum 6 mounted for rotation about an axle 7 within a cylindrical casing 1, a plurality of radially directed cavities 8 in axially spaced tiers and angularly spaced columns, an elongate opening 11 formed in the casing 1, a motor 14 connected to the drum 6 by gearing 15 so as successively to bring successive cavity columns opposite the opening 11, and a plurality of individual closure means 12 associated with the opening 11 and respectively adapted to close the cavities 8 otherwise exposed by the opening 11. The casing 1 is formed of lead with a stainless steel outer coating and is securely mounted on a concrete base 5. The drum 6 is also formed of lead. Where the object to be stored is a radioactive needle, this is located in a recess 21 formed in a cylindrical lead slug 22 (Fig. 1a) which is inserted in a cavity 8 in the drum 6 with the recess 21 located in an innermost position. Suitable selector means are provided which when set with respect to a particular cavity will cause the drum to rotate so that the column in which the cavity is located will be positioned opposite the opening, whereupon the closure means closing the cavity will be opened. Alternatively, rotation of the drum can be effected manually as can the opening of each individual closure means.
Patent GB-346227-A (GB)
Title: Improvements in devices for grinding ogees or other mouldings
IPC: B24B35/00
Filed: 1930-06-23
Abstract: 346,227. Grinding. MœLLER, F., Gera, Pohlitz, Germany. June 23, 1930, No. 19076. [Class 60.] Block, rubber, and like apparatus; driving and feed devices.-A device for grinding ogees or other mouldings comprises an upper bar e which is guided in a frame f and is connected by adjustable spring plungers g and sleeves h to a bar i carrying a strip n which is profiled according to the form desired and is covered with sandpaper or similar material. The grinding block is reciprocated by means of a crank disc c and the work o is guided over a table a between rolls p.
Patent GB-843486-A (GB)
Title: Improvements in or relating to pulse transmission systems
IPC: H04Q11/04
Filed: 1956-09-26
Abstract: 843,486. Automatic exchange circuits. POSTMASTER GENERAL. Sept. 26, 1956 [July 1, 1955], No. 19150/65. Class 40 (4). In a switching arrangement, in which channels are provided with integrating devices which are repeatedly connected together by pulse-operated switches at a rate at least twice the frequency of the signals carried on the channels, arrangements are provided whereby no energy flows. between the integrating devices and the pulse sources themselves. As shown, each of channels A ... C comprises an integrating capacitor CA ... CC whose terminals are connected to a common two-wire channel MP1, MP2 via rectifier pairs WA1, WA2 ... WC1, WC2. Switching pulses if simultaneously applied to the centre taps of coils TAW, TBW cause rectifiers WA1, WA2 and WB1, WB2 to conduct and charge to be exchanged between capacitors CA, CB. Industances LA, LB facilitate complete exchange of the charges. By the symmetry of the arrangement the capacitors cannot interchange energy with the pulse sources. The centre tapped inductance L and resistance R provide a reference potential for the pulses. In the event of one of the pulse sources PC being permanently connected (e.g. in the case of channel C being a junction), then in the event of channel C being connected, say, to channel A, so that the PA pulse is made to coincide with the PC pulse, the presence of the common resistor R causes a reduction in the current supplied from the PC source which reduction may be used as a busy signal for channel C. In an alternative arrangement for use in the case where the circuits belong to two groups, connections only being required between circuits in different groups, the inductance L and resistance R are omitted, the rectifiers of one of the groups are oppositely poled to those of the other two groups, and the pulse sources of this group are made to provide negative-going pulses. Specification 841,555 is referred to.
Patent GB-1347918-A (GB)
Title: Conveyor apparatus
IPC: B65G37/00
Filed: 1971-06-07
Abstract: 1347918 Conveyer apparatus P A TOOLING & ENG PTY Ltd 7 June 1971 [16 June 1970 7 Sept 1970] 19158/71 Headings B8A and B8E [Also in Division F4] A conveyer apparatus comprises an ascending conveyer and a descending conveyer, each conveyer comprising a pair of opposed conveyer elements driven in a common direction and in synchronism, each having a forward leg and a return leg and support members adapted to convey an article along the forward leg. The apparatus may be used in, e.g. sheet drying apparatus (Fig. 1, not shown) or a vehicle parking station (Fig. 5, not shown). In the Figure, sheet drying apparatus comprises an ascending conveyer 12 and a descending conveyer 13, each comprising a pair of chain assemblies 14a, 14b, which in turn comprise a pair of conveyer chains 19a, 19b, connected by angle strips 20, which in combination with the angle strips of the opposed chain assembly, form supports for trays 21. Plunger mechanism 25 transfers trays 21 to conveyer 13 at the top of the forward leg of conveyer 12, while a similar plunger mechanism (26, not shown) transfers the trays to conveyer 12 at the bottom of the forward leg of conveyer 13. The apparatus when used as a vehicle parking station (Figs. 5-7, not shown) operates similarly, the vehicles being driven up a ramp (62) on to a platform (59) supported by support elements (57) and rollers (58) which is conveyed up ascending conveyer (50) and down descending conveyer (51), transfer at top and bottom being effected by fluidoperated rams (60, 61).